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Journal of Physical Studies 11(3), 343–349 (2007)
DOI: https://doi.org/10.30970/jps.11.343 GAMMA-RAY RADIATION FROM POSTADIABATIC SUPERNOVA REMNANTSB. Hnatyk, I. Telezhinsky
Astronomical Observatory, Taras Shevchenko National University of Kyiv, |
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Supernova Remnants (SNRs) are among the most promising candidates in our Galaxy for the Cosmic Ray (CR) acceleration up to the energy of $10^{14}{-}10^{15}$ eV. Nevertheless we are missing direct evidence of hadronic acceleration in SNRs. The very promising signature of hadronic acceleration in SNRs is gamma-ray flux from decay of $π^0$-mesons, created in the p-p collisions of relativistic hadrons (protons, etc.) with interstellar medium (ISM) protons. In our work we calculate the expected gamma-ray flux from SNRs that are on transition (from adiabatic to radiative) stage of evolution. It is shown that formation of a dense shell during the transition stage is accompanied by increasing gamma-ray flux according to the increasing of the target proton density and CR energy in the newly born shell. The model was used while explaining of gamma-ray radiation from the shell-type SNR, detected recently with H.E.S.S.
PACS number(s): 98.38.Mz, 98.70.Rz, 95.30.Lz